They announced: "We have immediately asked relevant government departments to investigate those that started the rumour." Relevant government departments? But how enchanting to find Nike speaking like the foreign office of an independent republic, almost as if the sportswear firm has an extradition treaty with the Chinese government. It hasn't, of course, so the rather more salient question is whether Nike has any qualms about getting the famously gossamer-touched Chinese government to leave no stone unturned in the hunt for - and let's keep stressing it - an anonymous internet poster."We want to act to protect our brand reputation in the same way as any corporation would want to if people were posting or writing false accusations," the Nike spokesman Charlie Brooks told the Guardian yesterday. "This isn't about a debate on freedom of speech. It's simply helping us to identify the person who posted it."